CN109485179A - A kind of Sucralose waste water pretreatment system - Google Patents
A kind of Sucralose waste water pretreatment system Download PDFInfo
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- CN109485179A CN109485179A CN201811510691.4A CN201811510691A CN109485179A CN 109485179 A CN109485179 A CN 109485179A CN 201811510691 A CN201811510691 A CN 201811510691A CN 109485179 A CN109485179 A CN 109485179A
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- pressure heater
- waste water
- pipeline
- pressure
- preprocessing subsystem
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- 239000002351 wastewater Substances 0.000 title claims abstract description 39
- 239000004376 Sucralose Substances 0.000 title claims abstract description 33
- BAQAVOSOZGMPRM-QBMZZYIRSA-N sucralose Chemical compound O[C@@H]1[C@@H](O)[C@@H](Cl)[C@@H](CO)O[C@@H]1O[C@@]1(CCl)[C@@H](O)[C@H](O)[C@@H](CCl)O1 BAQAVOSOZGMPRM-QBMZZYIRSA-N 0.000 title claims abstract description 33
- 235000019408 sucralose Nutrition 0.000 title claims abstract description 33
- 238000007781 pre-processing Methods 0.000 claims abstract description 45
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 28
- 230000003647 oxidation Effects 0.000 claims abstract description 27
- 230000003197 catalytic effect Effects 0.000 claims abstract description 25
- 239000012530 fluid Substances 0.000 claims abstract description 19
- 239000002699 waste material Substances 0.000 claims abstract description 19
- 238000006068 polycondensation reaction Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 10
- 239000005416 organic matter Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000001816 cooling Methods 0.000 claims description 15
- 239000000047 product Substances 0.000 claims description 12
- 238000012643 polycondensation polymerization Methods 0.000 claims description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 8
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 8
- 239000003054 catalyst Substances 0.000 claims description 7
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 5
- 229910052737 gold Inorganic materials 0.000 claims description 5
- 239000010931 gold Substances 0.000 claims description 5
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 239000004793 Polystyrene Substances 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 4
- 239000000908 ammonium hydroxide Substances 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 229910021389 graphene Inorganic materials 0.000 claims description 4
- 239000004005 microsphere Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910052763 palladium Inorganic materials 0.000 claims description 4
- 229910052697 platinum Inorganic materials 0.000 claims description 4
- 229920002223 polystyrene Polymers 0.000 claims description 4
- 230000035484 reaction time Effects 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 4
- 239000004332 silver Substances 0.000 claims description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000006227 byproduct Substances 0.000 claims description 3
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 16
- 239000007788 liquid Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 238000007701 flash-distillation Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010025 steaming Methods 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 3
- 229930006000 Sucrose Natural products 0.000 description 3
- 235000003599 food sweetener Nutrition 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000005720 sucrose Substances 0.000 description 3
- 239000003765 sweetening agent Substances 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000009279 wet oxidation reaction Methods 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000009303 advanced oxidation process reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 235000012149 noodles Nutrition 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 235000019605 sweet taste sensations Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/89—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals
- B01J23/892—Nickel and noble metals
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/06—Flash evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention belongs to technical field of waste water processing, and in particular to a kind of Sucralose waste water pretreatment system, including the first preprocessing subsystem for removing organic matter, polycondensation reaction occurs at 180-220 DEG C or more for the organic matter, generates waste residue；The pretreatment system further includes the second preprocessing subsystem for carrying out catalysis oxidation to the treatment fluid being discharged from the first preprocessing subsystem；First preprocessing subsystem is connected by pipeline with the second preprocessing subsystem, and first preprocessing subsystem is equipped with Sucralose waste water inlet, and second preprocessing subsystem is equipped with outlet.The beneficial effects of the present invention are: the present invention cooperates the method for flash distillation to add thermogenetic polycondensation reaction to fulfil ahead of schedule waste liquid again using sectional steaming heating, the waste residue generated is avoided to attach to catalytic oxidation tower inner wall of the pipe, it can effectively prevent blocking, can achieve the effect of permanent stable operation.
Description
Technical field
The invention belongs to technical field of waste water processing, and in particular to a kind of Sucralose waste water pretreatment system.
Background technique
Sucralose is uniquely using sucrose as the functional sweetener of raw material, and sugariness is up to 600 times of sucrose.This sweetener
The features such as with noenergy, sugariness is high, and sweet taste is pure, highly safe.It is one of current classic functional sweetener.
The waste water generated in the production process of Sucralose is often high concentration, amount with high salt, difficult to degrade, and it is high to contain ring class
The organic wastewater of molecular contaminants, open loop chain rupture and degradation treatment are all more difficult, if pretreatment cannot reach effect, to subsequent
Biochemical treatment bring biggish difficulty, or even water outlet can be not up to standard.Wet raw noodles are useless for processing Sucralose
Water effect is very considerable, hence it is evident that is better than other advanced oxidation processes.
But polycondensation reaction can occur when water temperature rises to 180 DEG C or more for the organic pollutant in Sucralose production waste water
To generate a large amount of waste residues, and these waste residues can attach to catalytic oxidation tower inner wall of the pipe and progressive additive, and then cause
Heat exchanger, pipeline etc. usually block, and equipment can not be run steadily in the long term.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of Sucralose waste water pretreatment system, is carrying out catalysis oxidation
The easy organic matter that polycondensation reaction occurs is removed before, the waste residue generated is avoided to attach to catalytic oxidation tower inner wall of the pipe,
It can effectively prevent blocking.
The present invention provides the following technical solutions:
A kind of Sucralose waste water pretreatment system, it is described including the first preprocessing subsystem for removing organic matter
First preprocessing subsystem is equipped with Sucralose waste water inlet, occurs into the organic matter in first preprocessing subsystem
Polycondensation reaction generates waste residue；The pretreatment system further include for from the treatment fluid that the first preprocessing subsystem is discharged into
Second preprocessing subsystem of row catalysis oxidation, first preprocessing subsystem pass through pipeline and the second preprocessing subsystem phase
Connection, second preprocessing subsystem are equipped with outlet.
Preferably, first preprocessing subsystem include logical raw water slot is sequentially connected by pipeline, multistage pressure adds
Hot device one, batch condensation polymerization reactor, flash tank one, cooling slot one, filter press one and treatment fluid collecting tank, the raw water slot are equipped with three
Chlorine sucrose waste water inlet, the treatment fluid collecting tank are connected by pipeline with the second preprocessing subsystem.
Preferably, the ammonium hydroxide for being adjusted to neutrality Sucralose wastewater pH in raw water slot is equipped in the system；
The multistage pressure heater one includes at least the two-stage pressure heater being connected with each other by pipeline, wherein first
Stage pressure heater is low-pressure heater one of the pressure in 0.2-0.4Mpa, temperature at 120-140 DEG C, second level pressure heater
High-pressure heater one for pressure in 0.8-1.2Mpa, temperature at 180-200 DEG C, the low-pressure heater one, high-pressure heater
It is equipped with the vapor inlet port being connected with steam-out (SO) on one and is heated by steam, the low-pressure heater one passes through
Pipeline is connected with raw water slot, and the high-pressure heater one is connected by pipeline with batch condensation polymerization reactor.
Preferably, it is 180-190 DEG C, pressure 1.0-1.2Mpa that the batch condensation polymerization reactor, which carries out the temperature of polycondensation reaction,
Reaction time is 30-60min.
Preferably, second preprocessing subsystem include be sequentially connected by pipeline logical multistage pressure heater two,
Catalytic oxidation tower, flash tank two, cooling slot two, filter press two and collecting tank, the multistage pressure heater pass through pipeline
It is connected with the first preprocessing subsystem or treatment fluid collecting tank, the collecting tank is equipped with outlet.
Preferably, the multistage pressure heater two includes at least the two-stage pressure heating for being connected with each other logical by pipeline
Device, wherein first order pressure heater is low-pressure heater two of the pressure in 0.2-0.4Mpa, temperature at 120-140 DEG C, the
Secondary pressure heater is high-pressure heater two of the pressure in 0.8-1.2Mpa, temperature at 180-200 DEG C, the low-pressure heating
Device two is connected by pipeline with the first preprocessing subsystem or treatment fluid collecting tank, the high-pressure heater two by pipeline with
Catalytic oxidation tower is connected.
Preferably, the catalytic oxidation tower carries out catalysis oxygen to Sucralose waste water using Wet Catalytic Oxidation Method
Change.
Preferably, catalyst used by the Wet Catalytic Oxidation Method is prepared via a method which,
S1, the polystyrene microsphere aqueous solution for being 3%-5% by mass fraction and graphene oxide are according to weight ratio
It 100:(1-10) mixes, uniform stirring 20-60min, it is dry at 100-120 DEG C, obtain product A；
S2, nickel, palladium, silver, platinum and gold are calcined into 2h under 800 DEG C, condition of nitrogen gas according to weight ratio 1:2:3:1:1, obtained
Product B；
S3, by product A, product B according to weight ratio 1:(3-5) after evenly mixing, obtain the catalyst.
The beneficial effects of the present invention are:
1, the present invention cooperates the method for flash distillation to add thermogenetic polycondensation reaction to shift to an earlier date waste liquid again using sectional steaming heating
It completes, then is separated the waste residue that polycondensation reaction generates from waste liquid by the method for cooling, filters pressing, the clear liquid separated
Catalytic wet oxidation is carried out again, is avoided the waste residue generated from attaching to catalytic oxidation tower inner wall of the pipe, be can effectively prevent
Blocking, can achieve the effect of permanent stable operation.
2, the present invention separates the larger molecular organics that polycondensation reaction is generated in waste liquid, using catalytic wet oxygen
Change, catalytic wet oxidation system equipment service life can be greatly improved, reduces maintenance cost.
3, the present invention is used in combination using low-pressure steam heating and high pressure steam heating, and segmentally heating imitates steam utilization
Rate is substantially improved, and reduces operating cost.
4, the present invention is heated using steam, accomplishes sufficiently to disturb to the waste liquid in heating process, and then prevents stickiness useless
Slag has an impact preprocessing process.
Detailed description of the invention
Fig. 1 is the first preprocessing subsystem and the second preprocessing subsystem annexation figure；
Fig. 2 is the structural schematic diagram of Sucralose waste water pretreatment system.
Attached meaning marked in the figure is as follows:
One 13- high-pressure heater of 1- the first preprocessing subsystem 11- raw water slot 12- low-pressure heater, one 14- polycondensation
One 16- of reaction kettle 15- flash tank cooling one 17- filter press of slot, one 18- treatment fluid collecting tank
Two 22- high-pressure heater of 2- the second preprocessing subsystem 21- low-pressure heater, two 23- catalytic oxidation tower
Two 25- of 24- flash tank cooling two 26- filter press of slot, two 27- collecting tank
Specific embodiment
The present invention is illustrated combined with specific embodiments below.
Embodiment 1
As shown in Figure 1, a kind of Sucralose waste water pretreatment system, including the first pretreatment for removing organic matter
System 1, first preprocessing subsystem 1 is equipped with Sucralose waste water inlet, into first preprocessing subsystem 1
Organic matter occur polycondensation reaction, generate waste residue；The pretreatment system further includes for from 1 row of the first preprocessing subsystem
Treatment fluid out carries out the second preprocessing subsystem 2 of catalysis oxidation, and first preprocessing subsystem 1 passes through pipeline and second
Preprocessing subsystem 2 is connected, and second preprocessing subsystem 2 is equipped with outlet.
Embodiment 2
On the basis of embodiment 1, as shown in Fig. 2, first preprocessing subsystem includes being sequentially connected by pipeline
Logical raw water slot 11, multistage pressure heater one, batch condensation polymerization reactor 14, flash tank 1, cooling slot 1, one 17 and of filter press
Treatment fluid collecting tank 18, the raw water slot 11 are equipped with Sucralose waste water inlet, and the treatment fluid collecting tank 18 passes through pipeline
It is connected with the second preprocessing subsystem.
Embodiment 3
On the basis of real-time example 2, as shown in Fig. 2, being equipped in the system by Sucralose wastewater pH tune in raw water slot 11
It saves to neutral ammonium hydroxide；
The multistage pressure heater one includes at least the two-stage pressure heater being connected with each other by pipeline, wherein first
Stage pressure heater is low-pressure heater one 12 of the pressure in 0.3Mpa, temperature at 130 DEG C, and second level pressure heater is pressure
It is all provided on the high-pressure heater 1 of 1.0Mpa, temperature at 190 DEG C, the low-pressure heater 1, high-pressure heater 1
Have the vapor inlet port being connected with steam-out (SO) and heated by steam, the low-pressure heater 1 by pipeline with
Raw water slot 11 is connected, and the high-pressure heater 1 is connected by pipeline with batch condensation polymerization reactor 14.
Embodiment 4
On the basis of real-time example 3, the temperature that the batch condensation polymerization reactor carries out polycondensation reaction is 180 DEG C, and pressure is
1.0Mpa, reaction time 45min.
Embodiment 5
On the basis of real-time any one of example 1-4, as shown in Figure 1, 2, second preprocessing subsystem 2 includes passing through pipe
Road is sequentially connected logical multistage pressure heater two, catalytic oxidation tower 23, flash tank 2 24, cooling slot 2 25, filter press
2 26 and collecting tank 27, the multistage pressure heater passes through pipeline and the first preprocessing subsystem 1 or treatment fluid collecting tank 18
It is connected, the collecting tank 27 is equipped with outlet.
Embodiment 6
On the basis of real-time example 5, the multistage pressure heater two is included at least to be connected with each other logical two by pipeline
Stage pressure heater, wherein first order pressure heater is low-pressure heater two of the pressure in 0.3Mpa, temperature at 130 DEG C
21, second level pressure heater is high-pressure heater two 22 of the pressure in 1.0Mpa, temperature at 190 DEG C, the low-pressure heating
Device 2 21 is connected by pipeline with the first preprocessing subsystem 1 or treatment fluid collecting tank 18, and the high-pressure heater 2 22 is logical
Pipeline is crossed to be connected with catalytic oxidation tower 23.
Embodiment 7
On the basis of real-time example 6, the catalytic oxidation tower is using Wet Catalytic Oxidation Method to Sucralose waste water
Carry out catalysis oxidation；
Catalyst used by the Wet Catalytic Oxidation Method is prepared via a method which,
S1, the polystyrene microsphere aqueous solution for being 3%-5% by mass fraction and graphene oxide are according to weight ratio
It 100:(1-10) mixes, uniform stirring 20-60min, it is dry at 100-120 DEG C, obtain product A；
S2, nickel, palladium, silver, platinum and gold are calcined into 2h under 800 DEG C, condition of nitrogen gas according to weight ratio 1:2:3:1:1, obtained
Product B；
S3, by product A, product B according to weight ratio 1:(3-5) after evenly mixing, obtain the catalyst.
Polystyrene microsphere aqueous solution and the product A of graphene oxide preparation are the non-metallic composition with catalytic activity,
It increases electrochemistry specific surface area with classifying porous structure, micropore and meso-hole structure therein, and macroporous structure is easy to react
The transmission of object and product；Nickel, palladium, silver, platinum and the product B of gold preparation are with catalytically-active metals composition, and inventor is by the two
After mixing, it is found that its catalytic performance produces great raising, at this moment due to that can be distributed in catalytically-active metals composition
State micropore and it is mesoporous in, significantly increase the contact area of catalytic oxidation.
Pretreatment system workflow of the invention is as follows:
Sucralose produces waste water COD=150000mg/L, B/C < 0.2, initially enters raw water slot 11, and ammonium hydroxide tune is added
It saves pH to 7.0 and enters back into hyperbaric heating reactor then via being preheated in plunger pump to low-pressure heating reactor 12
The heating of 13 depth, low-pressure heating reactor 12 and high-pressure heater 13 are all 304 stainless steel materials, have pressure gauge, and low pressure adds
The reaction pressure control of thermal reactor in 0.3Mpa, reaction temperature control at 110 DEG C, the 13 reaction pressure control of hyperbaric heating reactor
System is heated in 1.0Mpa, reaction temperature control at 190 DEG C, and in a manner of being passed through steam, and the disturbance of steam can prevent waste water from existing
A large amount of waste residues that this section generates are attached to equipment surface, are heated to 170 DEG C；Waste water after heating, which is passed through batch condensation polymerization reactor 14, makes it
In some larger molecular organics polycondensation reaction occurs, the material of batch condensation polymerization reactor 14 is 304 stainless steels, and kettle interior reaction temperature is
170 DEG C, reaction pressure 1.0Mpa, the reaction time is 45 minutes；Flash tank 1, abrupt release pressure are entered by relief valve control again
Power reduces waste liquid boiling point, is conducive to waste residue and separates from waste liquid, and the material of flash tank 1 is 304 stainless steels；After flash distillation
Mixture through cooling slot 1 cool down, cooling slot 1 utilize circulating water cooling；Enter filter press 1 after cooling, after filters pressing
Obtained clear liquid enters treatment fluid collecting tank 18, waste water COD=120000mg/L.
Waste water in treatment fluid collecting tank 18 passes sequentially through low-pressure heater 2 21, high-pressure heater 2 22 via plunger pump
170 DEG C are heated to, wherein the material of low-pressure heater 2 21 is 304 stainless steels, and internal pressure is controlled in 0.3Mpa, hyperbaric heating
The material of device 2 22 is 304 stainless steels, and internal pressure control is Kazakhstan conjunction in 1.0Mpa, the material of catalytic oxidation tower 23
Gold, inside are furnished with 1.5 side's catalyst, and 200-215 DEG C of temperature, outlet pressure 2.5Mpa in tower, dwell time in the tower is 4 hours；
Water outlet enters flash tank 2 24, and abrupt release pressure reduces boiling point；The slot 2 25 that cools down utilizes circulating water cooling；Enter after cooling
Filter press 2 26, the clear liquid obtained after filters pressing enter collecting tank 27.It is discharged COD=60000mg/L, biochemical B/C > 0.4.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, although referring to aforementioned reality
Applying example, invention is explained in detail, for those skilled in the art, still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features.It is all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of Sucralose waste water pretreatment system, which is characterized in that including the first pretreatment for removing organic matter
System (1), first preprocessing subsystem (1) are equipped with Sucralose waste water inlet, into the first pretreatment subsystem
Polycondensation reaction occurs for the organic matter in system (1), generates waste residue；The pretreatment system further includes for sub from the first pretreatment
The treatment fluid of system (1) discharge carries out the second preprocessing subsystem (2) of catalysis oxidation, first preprocessing subsystem (1)
It is connected by pipeline with the second preprocessing subsystem (2), second preprocessing subsystem (2) is equipped with outlet.
2. a kind of Sucralose waste water pretreatment system according to claim 1, which is characterized in that first pretreatment
Subsystem (1) include be sequentially connected by pipeline logical raw water slot (11), multistage pressure heater one, batch condensation polymerization reactor (14),
Flash tank one (15), cooling slot one (16), filter press one (17) and treatment fluid collecting tank (18), the raw water slot (11) are equipped with
Sucralose waste water inlet, the treatment fluid collecting tank (18) are connected by pipeline with the second preprocessing subsystem (2).
3. a kind of Sucralose waste water pretreatment system according to claim 2, which is characterized in that being equipped in the system will
The ammonium hydroxide that the interior Sucralose wastewater pH of raw water slot (11) is adjusted to neutrality；
The multistage pressure heater one includes at least the two-stage pressure heater being connected with each other by pipeline, wherein first order pressure
Power heater is low-pressure heater one (12) of the pressure in 0.2-0.4Mpa, temperature at 120-140 DEG C, second level pressure heater
High-pressure heater one (13) for pressure in 0.8-1.2Mpa, temperature at 180-200 DEG C, the low-pressure heater one (12), height
The vapor inlet port being connected with steam-out (SO) is equipped in pressure heater one (13) and is heated by steam, the low pressure
Heater one (12) is connected by pipeline with raw water slot (11), and the high-pressure heater one (13) passes through pipeline and polycondensation reaction
Kettle (14) is connected.
4. a kind of Sucralose waste water pretreatment system according to claim 2, which is characterized in that the batch condensation polymerization reactor
(14) temperature for carrying out polycondensation reaction is 180-190 DEG C, pressure 1.0-1.2Mpa, reaction time 30-60min.
5. a kind of Sucralose waste water pretreatment system according to claim 1-4, which is characterized in that described
Two preprocessing subsystems (2) include be sequentially connected by pipeline logical multistage pressure heater two, catalytic oxidation tower (23),
Flash tank two (24), cooling slot two (25), filter press two (26) and collecting tank (27), the multistage pressure heater pass through pipeline
It is connected with the first preprocessing subsystem (1) or treatment fluid collecting tank (18), the collecting tank (27) is equipped with outlet.
6. a kind of Sucralose waste water pretreatment system according to claim 5, which is characterized in that the multistage pressure adds
Hot device two includes at least the two-stage pressure heater for being connected with each other logical by pipeline, and wherein first order pressure heater is pressure
In the low-pressure heater two (21) of 0.2-0.4Mpa, temperature at 120-140 DEG C, second level pressure heater is pressure in 0.8-
The high-pressure heater two (22) of 1.2Mpa, temperature at 180-200 DEG C, the low-pressure heater two (21) are pre- by pipeline and first
Processing subsystem (1) or treatment fluid collecting tank (27) are connected, and the high-pressure heater two (22) passes through pipeline and catalysis oxidation
Reaction tower (23) is connected.
7. a kind of Sucralose waste water pretreatment system according to claim 6, which is characterized in that the catalysis oxidation is anti-
Tower (23) are answered to carry out catalysis oxidation to Sucralose waste water using Wet Catalytic Oxidation Method.
8. a kind of Sucralose waste water pretreatment system according to claim 7, which is characterized in that the catalytic wet oxygen
Catalyst used by change method is prepared via a method which,
S1, the polystyrene microsphere aqueous solution for being 3%-5% by mass fraction and graphene oxide are 100:(1- according to weight ratio
10) it mixes, uniform stirring 20-60min, it is dry at 100-120 DEG C, obtain product A；
S2, nickel, palladium, silver, platinum and gold are calcined into 2h under 800 DEG C, condition of nitrogen gas according to weight ratio 1:2:3:1:1, obtains product
B；
S3, by product A, product B according to weight ratio 1:(3-5) after evenly mixing, obtain the catalyst.
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